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Finding the Fourth Proportional to 275,719.96, 380,476.02 and 154,858.12

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Solution

The fourth proportional to 275,719.96, 380,476.02 and 154,858.12 is: 213,694.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,719.96 : 380,476.02 = 154,858.12 : x
  2. Step 2: Convert to fraction form
    275,719.96/380,476.02 = 154,858.12/x
  3. Step 3: Cross multiply
    275,719.96x = 380,476.02 × 154,858.12
  4. Step 4: Simplify right side
    275,719.96x = 58,919,801,162.28
  5. Step 5: Solve for x
    x = 58,919,801,162.28/275,719.96
  6. Step 6: Final answer
    x = 213,694.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.